Santika, Mila, Agus Wismanto, and Petrus Joko Warkito. “142. Peningkatan Keterampilan Menulis Proposal Kegiatan Melalui Model Project Based Learning Kelas XI SMKN 6 Semarang”. Prosiding Seminar Nasional Pendidikan Profesi Guru 1, no. 1 (July 3, 2023): 1310–1316. Accessed December 5, 2025. https://conference.upgris.ac.id/index.php/psnppg/article/view/4083.